if statement syntax js code example

Example 1: how to make an if statement in javascript

if(condition1) { //runs if the condition is true
  //type what you want to happen if the condition is true
}else if (condition2) {
  //type what you want to happen if the condition is true
} else { //If no condition is true it will run this
  //type what you want it to do
}

Example 2: javascript loop and if statement

function LetterCapitalize(str) { 
     var output = ""+str.charAt(0).toUpperCase();
     for(var i=1; i < str.length; i++){
         if(str.charAt(i - 1) == " ") {
             output += str.charAt(i).toUpperCase();
         } else {
             output += str.charAt(i);
         }
     }
    return output;
}
console.log(LetterCapitalize("hello world"))